The fourteenth season of CSI: Crime Scene Investigation premiered on September 25, 2013 on CBS, and concluded on May 7, 2014. It consisted of 22 episodes.The series's 300th episode aired during the season, with Marg Helgenberger guest starring in the landmark episode in a series of newly recorded "flashbacks" to a case that occurred in the time frame of the first season.Due to the leave of absence taken by George Eads following his altercation with a writer, he appears only in the first three episodes of the season, under the pretext of receiving special training in Quantico. Eads returned in the episode "Check In and Check Out".The season also introduced a redesigned title sequence.